European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
September 2017
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
25
Issue:
3

Influence of Different Ceramic Systems on Marginal Misfit

Objective: the aim of this study was to evaluate the marginal misfit at the interface between a ceramic coping and its abutment. Methods: Twenty-four specimens were made with solid abutments. The specimens were divided into 3 groups according to the ceramic system (n = 8): Lava (zirconia), IPS e.max Press (lithium disilicate), and IPS
Empress Esthetic (leucite). All copings were cemented with resin luting agent (RelyX U200) and the marginal misfit were evaluated at 3 different times: initial, after cementation, and after mechanical cycling using a linear measuring microscope (Measuring Microscope STM-Olympus) at a magnification of 40x. All specimens were subjected to
mechanical cycling (1 million cycles) by an universal testing machine (Instron 8800). The results were statistically analyzed using Analysis of Variance and Student’s t-test (α = 0.05). Results: all groups showed an increase in the marginal misfit after cementation. The lithium disilicate group demonstrated the lowest interfacial gap values a​​ t each evaluation (p = 0.001). The zirconia and leucite groups showed similar interfacial gap values (initial, p = 0.244; and post cementation, p = 0.751). Conclusions: the cementation increase the marginal misfit, but the mechanical cycling did not influence the marginal misfit of the ceramics systems evaluated.

Keywords
Dental Implant
Marginal Misfit
Cementation
CAD/CAM

10.1922/EJPRD_01702Vargas04

Article Price
£15.00
Institution Article Price
£
Page Start
127
Page End
130
Authors
Dr Sebastião Pires Vargas, Prof. Ana Christina Claro Neves, Prof. Marina Amaral, Dr Mirelle Nery Henrique, Prof. Laís Regiane Silva-Concílio

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Nanocryl Coating of PMMA Complete Denture Base Materials to Prevent Scratching
  2. 116
  3. 126

  1. Influence of Different Ceramic Systems on Marginal Misfit
  2. 127
  3. 130

  1. Effect of Distance on Light Transmission Through Polymerized Resin Composite
  2. 131
  3. 135

  1. Survival of Direct Posterior Composites With and Without a Bulk Fill Base
  2. 136
  3. 142

  1. 3D Metal Printing – Additive Manufacturing Technologies for Frameworks of Implant Borne Fixed Dental Prosthesis
  2. 143
  3. 147

  1. British Society of Prosthodontics Annual Conference 2017 report
  2. 148
  3. 149

  1. BSSPD abstracts 2017
  2. 150
  3. 182

  1. BSSPD 2017 prize winners and photos
  2. 183
  3. 183

  1. BSSPD Liverpool 2018 Taster
  2. 184
  3. 184